ETE TIGRE Wastewater Treatment Plant - Nova Londrina, Paraná, Brazil

ETE TIGRE is a wastewater treatment plant located in Nova Londrina, within the state of Paraná, Brazil. The facility serves a population of approximately 6,481 residents, classifying it as a small-scale municipal treatment operation in the southern region of the country. The plant provides secondary treatment, which is the standard biological treatment level required for most urban wastewater under Brazilian regulations. Secondary treatment typically involves biological degradation of organic matter followed by sedimentation. The plant discharges a reported volume of 503.71 units of treated effluent. The treated wastewater from ETE TIGRE is discharged into local water bodies that ultimately drain into the Paraná River basin, one of South America's major river systems. This basin supports diverse aquatic ecosystems and provides water for agriculture, industry, and communities downstream. The plant's operation helps protect local water quality and contributes to the overall health of the Paraná watershed.

The plant discharges into the Paraná River basin, which flows through Brazil, Paraguay, and Argentina before reaching the Río de la Plata estuary. This watershed is ecologically significant, supporting diverse fish species and providing critical habitat for migratory birds. The secondary treatment process reduces organic pollutants and suspended solids, helping to maintain water quality in the downstream aquatic environment.